Criteria of openness for relations
Fundamenta Mathematicae, Tome 114 (1981) no. 3, pp. 219-228.

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

DOI : 10.4064/fm-114-3-219-228

Marek Wilhelm 1

1
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Marek Wilhelm. Criteria of openness for relations. Fundamenta Mathematicae, Tome 114 (1981) no. 3, pp. 219-228. doi : 10.4064/fm-114-3-219-228. http://geodesic.mathdoc.fr/articles/10.4064/fm-114-3-219-228/

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